Tucking mechanism for sewing-machines.



PATENTED DEC. 31

W. N. PARKES. ING MECHANISM FOR SEWING MACHINES.

APPLIOATIOH FILED SEPT. 18, 1902. RENEWED FOVJB, 1907.

UNITED STATES PATENT OFFICE. I

WILLIAMN. PARKEZS, OF BROOKLYN, NEW YORK.

Specification of Letters Patent.

T UCKING MEC'H AN'ISM FOR SEWING-MOMS.

Patented Dec. 31, 1907.

Application filed September 18- 1902. Serial No. 123.884. RenewedNovember 18. 1907. Serial N 402.739,

' the stitchculling operation. to form even and uniform tucks orgathers.

It is the ob ect of my invention to provide a device whereby asewing-machine can be used in the formation of tucks or gathers of evenand uniform character with great facility; and whereby said tucks orgathers can be formed in mrullel, straight lines or in parallel, curvedlines and in any part or portion of the material.

'ith these ends in view my invention consists in the devices, parts,features and combinations hereinafter described and set forth inthe-claims. t l e In the drznvings: Figure 1, is a front elevation ofthe head of an ordinary sewing ma chine, the same showing the characterof stitch-forming mechanism which I conte1nplate using in connectionwith my device or means, parts being in section; Fig. 2, is aperspectiwc view, looking at the bottom of the Presser-foot forming partof the means employed by me for theiunctions stated; Fig. 3, s aside'clevation, partly in sections, of the presser-foot, throutdateandneedlebar showing the relation 0 such parts; Fig. 4, is a perspectiveview of asectiou of the throatplate, illustrating a part of my meansfol-"the purposes stated; Fig. 5,,is a longitudinal section of the portsshown in Fi 4, taken on the liner-2: and looking in the direction o thearrows shown in said figure; and Figs. 6,? and 8 are pers ective viewsshowing three different ways 0 forming the tucks or gathers by the meansof my invention.

in the drawings, 'A, re resents the head of the sewing-machine; a, t 1eneedle-bar which is caused to reciprocate therein; 6, the

presser ber which is usually supported by said head; c, the bed-plate;d, the shuttlerace; a, the shuttle, or loopcr; f, the. latch for holdingthe bobbin-case from rotation; g, the feed-dogs; 11, the severalelements employed for guiding the thread, placing tension thereon andtakin -up and setting the stitch. These may all be common devices forthe. purpose such as will be found in any ordinary sewing-machine. u f

My invention contemplates the application to the needle-bar of twoneedles, 1, to be used in conjunction with the single shuttle, orlooper, e, which latter takes a loop from each of the needles and passesits own thread through said needle-loops and holds the same on the underside of the work. In twoneedle machines the condition contem lated by myinvention, as just set forth, wi ordinarily be found, though sometimesloopers will be found, respectively, cooperating with the needles. Undersuch circumstances, means should be added to the machines for enablingthe thread of one of the loo ers to pass through both the needle-loops.his is an essential feature of my invention, inasmuch as the characterof the tucks or gathers produced depends upon the needle-loops berowedin the center 3, stand adjacent the needle aperture 4, and flared atboth ends 5, as shown in Fig. 2. Obviously, this foot is provided with ashank 6, and an aperture 7,.

affording means for r idily attaching it to the presser-bar in theordinary manner.

The throat-plate 8, shown in Figs. 4 and 5, is provided with theordinary feed-slots 9, a transverse elongated slot 10, for the receptionof theneedles lying between the feed slots, and an upwardly projectingtongue 11, for the purpose of fitting in the grooves in the bottom ofthe iresser-foot, and over which the fabric is fed This tongue is uitcbroad on the surface, 12, tapered abrupt v toward the front to a narrowe e 13, and slightly ta cred and round-' ed toward the rear end a s iownat 14. On the under side the tongue 11, is very much reduced'as shownat- 15, thus making a. neck around which the fabric may be drawn by thelooper-thread as the needle-loo are drawn together in setting thestitch. The tongue 1 is of a size suiiicient to leave a space on eachside thereof and between the same and the walls of the groove in theresser-foot, at and near the needle aperture 0 erein, this being for thepurpose of allowing the ready and mg drawn together below the work forthe I37 and the tucks are formed.

work oanapproach tho tongue and rido or pass upon and by tho samewithout drag or catching, and this construction also cooporatos withthcfront llarod part of groovo 5 in the prossor foot by alllm'ing tho workto ho manipulated in tho said groovo to form curved tucks, without dragon or snagging tho work. Tho broad portion 12 ot tho tong'no givos thopropor sizo to tho tucks. and the neck 15 onablos thrhottom of tho tucksto ho drawn togothor by tho loo or throad as tho stitch is sot, thisUPtItItlUll hoin; facilitatod by disposing tho tonguo so as to ovorhangtho-ncodlo slot 10, as shown in Figs, 4 and 5. rear ond of tho touguo asat H, tho tuck can pass with facility from tho tonguo without drag andtho manipulation of tho work. al'tor lca\'in; tho stitching point. intho roar llarod part of groovo 5 is also tacilitatod without dotrimontto tho formod tucks whon tho samo aro inado curvod.

It will ho obvious that tho tonguo may ho formod as an intogral part oftho throat-pinto S, which, of'courso, is roniovahlo from thohod-platoand can ho slid into placo in an ordinary machino. llowovor.altor tho prcssorfoot has hcon attachod, it. may ho found nocossar "toaccuratoh' adjust tho tonguo rolativoly to tho groovo and noodloaporturo in said foot. In ordor to socuro a nico adjustmont. it is nocosari to rondor said tonguo movablo and adjnstahlo; llon o, l havo)rovidod tho moans, sh wn in Figs. 4 and 5. ior |no\'in; said tullgllt'hota latorall v and longitudinally of tho throat-olato. in said ligurostho tonguo is shown as monntod upon a plato Hi, sot within a countotsinkl7, in tho throat-plato, thus lontloring tho snrl'aco of tho lattcrllush with tho surl'aco of tho adjusta-hlo plato lli. Said adjnstahloplato is capahlo of lnovolnont hoth latorally and lotigitudinally bymoans of cross-slots Ls, and a llat-hoadod scrow It), sot down in anonlargod o )oning or doprossion .Zl), in said piato l6.

7 '1 ho countorsink in tho throat-plato is of suflicicnt diinonsions togivo considoralnl play or movomont to tho ilato lti, thus onahlin; avory lino and nico adjustmont ol'tho tongno ll, rclativoly to tho groovoin tho prossor-l'oot and tho nootllcs.

Front tho ahovidoscriplion tho opomtion of my n'ioans will ho cloar withtho lollowin; l brlol' statcmont: 'l'ho noodlos, in 1ponctrating thowork. pass on opposito sidoso tho tongnc 1 l. and tho loops olnoodlwthroad al'o caught h tho nosc of tho loopor which. in rotating.ovoutnally passos its throaii through said loops. As tho fililtllt'fiaro sot, tho noodlo- B rounding or slightly taporing; tho

loops aro drawn close togother honoath tho fabric and tho latter has itsadjacont portions drawn closo togothor around thc nook of tho tonguo ll.This givos to thc tucks or gathors a tubular formation lcaving thcm, asthcy pass from tho tongue, standing oroct as shown in Fig. 8. Aftor thotucks aro thus t'ormod and as suocossivo tucks aro mado, [)lLW'lUttSlyformod too is aro llattonod or ironod. as shown in Figsitj and 7, thishoing: accomplishtai by tho prossor-foot and throatplato as said linkspass hotwocn tho samo; that is to say. tho llat portion of tho hottom oftho prossor-foot, on oach sido of tho llarod groovo 5, ill ongago thoproviouslv l'ormod tucks, as othors aro boing inado. and accordin o; towhich sido of tho lino of scam it is dosirod to la tho sanio, and prossthoin against tho tlnoat-platc. tho t'orco of tho prossurocorrospontling to tho powor of the usual prossorbar spring; and as saidsprita, opposos tho lifting action of'tho food upon tho prossorfoot. thotwo causol tho foot to vibrato vorticall and produco a hammoring action.incroasing the smoothing or ironing action. Tho tlarod p rtion of thogroovo 5 in roar of tho noodlo-slot in tho prcssor-hvot, pcrmits of apropor manipulation of tho work to onahlo tho foot to iron or llattontho curvi-d tucks shown in Fig. 7.

By manipulating the fabric or work, tho

tucks or gathors ma ho niado to oxtond;

rolativoly to tho odgos of tho work, in parallol linos in any dii'octiontlosirod; and by pro tori manipulating the fabric or work tho tut-its orgathcrs may hogivon a curvod formation as shown in Fig. 7, tho shape oftho. tonguo facilitating; such manipulation on account of its curvod,forward ond and its narrowod nook. 'lho llaring groovo :3 in tho prossor'oot also iacilitatos this oporation and mani )ulation.

Fr nt t io ahovo it will ho soon that. l havoprovidod a siniplo'lnoansfor producing porl'oct tucks orgathors of Variod charactoz'; and a:noans which aro choap and oll'octivo for tho an ioso and which aro canihlo of a i )lication l l l l t any ordinary sowing lnachino.

Having tlosorihod my inv ntion what I claim and dosiro to socuro byLottors lalont, is:

1. In combination, a stitch-forming mochanisni; a prossor-loot having a.noodlo aporturc, and l'orniod in its bottom with a groovo tlarod fromsaid noodlo aporturo to its front ond; and a stationary touguocoi'iporating with said grom'o and la wort-d toward its front ond 1o anarrow odgo, whcrchy tho. work may rido upon and |Hl tho tonguo withoutdrag: and bolnanipulntod in tho llarod portion of tho groovo to formcurvod tucks.

2. In ombination. a stitch-l'orniin; moch- :l|!i\l]l. a prossI'T-l imlflfl'llittl in its lmtltml with a groov and a throat-plato providcdupwardlg projecting tongue for cooperating with sai groove in ormmgtucks or gathers,

'anism, a resser-foot formed on its gathers, said tongue having its rearend narrowed and curved.

crating with said groove in forming tucks or "rear' end, and formed witha neck in its under crating with sai groove in forming tucks or athers,said tongue being tapered toward described.

3. Incornbination, a stitch-formin mechbottom with a. groove, and athroat-plate rovided with an upwardl projecting tongue 01' 006peratingwith sai groove in forming tucks or '4. I11 combination, astitch-forming mechanism; a resser-foot formed with a groove in itsbottom; and a. tongue provided with a 'broad, top portion, for 006crating with said groove toform tucks, and with a narrowed neckportionbelow said to -portion against the op osite sides of whic the bottoms ofthe tuc .s may be drawn as the stitch is set, substantially asdescribed.

5. In combination, a StiiX'lX-fOT-uiL-IQmech- .llnism, a presser-foothaving in its bittoin a groove, and a throat-plate provided withv ansaid ton ue being provided with a tapered front en and a rear narrowedand curved end. I

6. In combination, a stitch-formin mechanism, a presser-foot providedinits bottom with a groove, and a throat-plate )rovided with anupwardlv-projecting tongue or coopathers, said tongue bein taperedtoward its ont end, narrowed an curved oward its side.

-7. In combination, a stitch-forming mech: anism, a resser-foot formedwith a groove in its bottom, and a throat-plate rovided with an upwardlprojecting tongue i or c06p- 1 erating with sai groove in formingtucksor f gathers, and means for adjusting said tongue relatively tosaid groove in a horizontal plane.

8. In combination, a stitch-forming mechanism, a presser ioot formedwit-h a groove in its bottom, a throat-plate provided with an upwardlvprojecting tongue for cooperating with said groove in forming tucks orgathers, and means for adjusting said tongue relatively to said. groove,in directions at rightangles to each other.

9. In combination, a stitch-fonning mechanism, a presser-foot formedwith a groove in its bottom, athront-plate, an independent plate orslide connected to said throat-plate, and having an upwardly projectingtongue for cooperating with said groove in forming tucks or gathers, andmeans, for adjustin said tongue, accessible from the top of said slide.

it). In combination, a stitch-forming mechanism, a presser-foot formedwith a groove in its bottom, a throat-plate having a countersinktherein, a slide or plate secured in said countersink and provided withan upwardly projecting tongue for cooperating with said groove informing tucks or athers.

11. In combination a stitc i-forming mechanism comprising a )lurality ofneedles and acooperating means (r-passing a thread into engagement withthe loops of the thread of both needles, a plurality of devices for puckering or folding the work between the needles, and means forhorizontally adjusting said devices relatively in two directions tofacilitate the proper formation of the puckers or folds.

In testimony whereof I have hereunto signed my name in the presence oftwo subscribing witnesses.

. WILLIAM N. PARKES. Witnesses (Jims. M00. Cniriraz.

M. B. BOABE.

